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The Study of Microstructures and Tensile Properties of an In Situ A356-ZrB2 Metal Matrix Composite

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Abstract:

A composite containing A356 Al alloy as matrix and ZrB2 particles was made in an induction furnace by mixing Al-15Zr and Al-8B master alloys with Zr:B weight ratio of 9:2. The microstructures and tensile properties of the extruded composite were studied by scanning electron microscopy (SEM) and x-ray diffraction (XRD) analysis before and after T6 heat treatment. XRD results showed the presence of ZrB2 phase in the microstructure. Tensile test results showed an increase in ultimate tensile strength (UTS) and elongation values of the extruded composite in comparison with the matrix alloy. Further investigation showed an increase in UTS, but reduction in elongation values of the composite after T6 heat treatment.

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Info:

Periodical:

Key Engineering Materials (Volume 553)

Pages:

29-33

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.553.29

Citation:

Cite this paper

Online since:

June 2013

Authors:

H. Moosavian, Masoud Emamy, M. Mansouri Arani, S. Mahboubi

Keywords:

A356 Aluminum Alloy, Metal Matrix Composite (MMC), Tensile Properties, ZrB2 Particles

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